Grate.



L. I. BINDER.

kGRATL APPLICATION FILED DEC. l5, I9I3.

1,154,477., Patentedsept. 21, 1915.

COLUMBIA PLANOGRAPH c0..wAsHlNuToN. D. c.

narran saarns PATENT formes.

YLiao J. BINDER, or sroKANn' Wasrrriveroiv.

GRATE.

To all whom, it may concern l Be it known that I, Liao J. BINDER, a citi- Zen of the United States, residing at Spoj kane, in the county of Spokane and State of lVashington, have invented new and useful Improvements in Grates, of which the following is u specification. y l l This invention relates to improvements in grates, and more particularly to that type of construction in which each grate bar embodies a skeleton frame, a number of fuel supporting sections mounted on saidframe, and means for connecting each section to the sections adjacent thereto.

The object of the present invention is to provide a grate of the construction identified, in which the connections between the sections hold the latter in proper relation at all times, and yet permit of the ready re'- moval or replacement of any particular section, the construction being of such nature that the said connections are not detrimentally affected by the heat to which the fuel supporting sections are subject.

An embodiment of the invention is illustrated in the accompanying drawings, in which Figure 1 is a perspective view of a grate in which the features of the invention are incorporated; Fig. 2 is a partial plan view thereof; Fig. 3 is a partial longitudinal sectional View thereof; and Fig. 4 is a transverse sectional View thereof.

Similar characters of reference designate corresponding parts throughout the several views.

The grate bar shown in the drawings is of wedge shape and is adapted for circular grates. It will be understood, however, that the features of the invention may be incorporated in ordinary rectangular grate bars.

The grate bar is made up of a skeleton frame which includes side bars 1 and cross bars 2, and a number of conterminously arranged fuel supporting sections 3 which bridge the side bars l and are provided adjacent their edges with depending lugs or flanges 4, which lie against the outer faces of said side bars and center the sections 3 in position upon the skeleton frame. The upper edges of the bars 1 are beveled inwardly and the upper edges of the cross bars 2 are also beveled. The object of providing these beveled edges is to facilitate the discharge of ashes through the grate and to prevent any lodgment of ashes between Specication of Letters Patent. Patented Sept, 21, 191 Application vfiled December-.15, 1913. ;Slera1i N,o. SQQSB.

lthe :framey and ,the yfuel supporting sections,

such as might prevent the even seating ofy said' sections and thus interfere with the Vcontinuity or regularity of the fuel supporting surface or with thefjointure of the fuel supporting sections to o-ne another.

Each section 3 is positively connected to the section adjacent thereto, the connections between vsaid sections preventing displacement of any one of them relatively to the others. The connections between the sections includea dovetail lug-5 `projecting be- ,yondan end of each section and a dovetail recess 6 formed in the opposite end of the section, and in which the lug 5 of an adjacent section engages. Each section therefore has at one end thereof a lug 5 and at its other end a recess 6, and the lug 5 of one section engages in the recess 6 of the adjacent section. It is to be noted that the recesses 6 are of somewhat greater depth than the lugs 5, and that the eHieiency of the connection between the sections does not depend on a tight joint.

It will, of course, be apparent that the fuel supporting sections at the end of the bar have the connecting elements only at one end thereof. Thus, the fuel supporting section at the inner end of the bar is provided only with the lug 5, and the fuel supporting section at the outer end of the bar is provided only with the recess 6. The

other fuel supporting sections, as already explained, are provided with both the lugs5 and the recesses 6.

Owing to the depth of the recess 6 being greater than that of the lug 5, a transverse air space 7 intervenes between the connected ends of the sections,'the object of the air spaces 7 being to provide against any such deformation of the adjacent ends of the sec-l tions, by reason of expansion, as would tend to interfere with the engagement of the lugs 5 in the recesses 6.

In view of the fact that the efficiency of the connections between the sections depends merely on the alinement of the recesses 6 with the lugs 5, and of the fact that this alinement is preserved by reason of the air spaces 7, it is apparent that should any one of the fuel sections become unduly worn, it may be removed and a new one substituted, and efficiently connected with the old sections adjacent each end thereof. As stated above, the efficiency of the connections between the sections does not depend on a served.

The lugs or flanges Liat the sides of each section act, as stated, to center the sections upon the supporting frame, and incidentally, to center each section relatively to the sections adjacent thereto, so that no special care is required in securing the alinement of the recesses G and the lugs 5. The flanges i also reinforce the side edge portions of the fuel supporting sections and prevent any ap preciable deformation of said side edge portions, and in this way contribute to the eioiency of the connections between the sections.

Having fully described my invention, I

Y claim 2 In a grate bar, a frame comprising diverging side bars, cross bars connecting said side bars, fuel supporting sections mounted on said frame, said sections having diverging depending flanges formed on the under side thereof and engaging the outer faces of the side bars, and means for connecting said sections at their. adjacent ends.

In testimony whereof I have hereunto set my hand in presence of two subscribing witne'sses.

Liso J. BINDER.

Copies of this patent may be obtained for ve centseach, by addressing the Commissioner of Patents, Washington, D. G. 

